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(cos2x)/(sqrt(2)cosx+sinx)=0 la ecuación

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Solución numérica:

Buscar la solución numérica en el intervalo [, ]

Solución

Ha introducido [src]
       cos(2*x)          
--------------------- = 0
  ___                    
\/ 2 *cos(x) + sin(x)    
$$\frac{\cos{\left(2 x \right)}}{\sin{\left(x \right)} + \sqrt{2} \cos{\left(x \right)}} = 0$$
Solución detallada
Tenemos la ecuación
$$\frac{\cos{\left(2 x \right)}}{\sin{\left(x \right)} + \sqrt{2} \cos{\left(x \right)}} = 0$$
cambiamos
$$\frac{\cos{\left(2 x \right)}}{\sin{\left(x \right)} + \sqrt{2} \cos{\left(x \right)}} = 0$$
$$\frac{\cos{\left(2 x \right)}}{\sin{\left(x \right)} + \sqrt{2} \cos{\left(x \right)}} = 0$$
Sustituimos
$$w = \cos{\left(x \right)}$$
Tenemos la ecuación:
$$\frac{\cos{\left(2 x \right)}}{\sqrt{2} w + \sin{\left(x \right)}} = 0$$
Multipliquemos las dos partes de la ecuación por el denominador w*sqrt(2) + sin(x)
obtendremos:
$$\cos{\left(2 x \right)} = 0$$
Abrimos los paréntesis en el miembro izquierdo de la ecuación
cos2*x = 0

Esta ecuación no tiene soluciones
hacemos cambio inverso
$$\cos{\left(x \right)} = w$$
Tenemos la ecuación
$$\cos{\left(x \right)} = w$$
es la ecuación trigonométrica más simple
Esta ecuación se reorganiza en
$$x = \pi n + \operatorname{acos}{\left(w \right)}$$
$$x = \pi n + \operatorname{acos}{\left(w \right)} - \pi$$
O
$$x = \pi n + \operatorname{acos}{\left(w \right)}$$
$$x = \pi n + \operatorname{acos}{\left(w \right)} - \pi$$
, donde n es cualquier número entero
sustituimos w:
Gráfica
Suma y producto de raíces [src]
suma
pi   3*pi
-- + ----
4     4  
$$\frac{\pi}{4} + \frac{3 \pi}{4}$$
=
pi
$$\pi$$
producto
pi 3*pi
--*----
4   4  
$$\frac{\pi}{4} \frac{3 \pi}{4}$$
=
    2
3*pi 
-----
  16 
$$\frac{3 \pi^{2}}{16}$$
3*pi^2/16
Respuesta rápida [src]
     pi
x1 = --
     4 
$$x_{1} = \frac{\pi}{4}$$
     3*pi
x2 = ----
      4  
$$x_{2} = \frac{3 \pi}{4}$$
x2 = 3*pi/4
Respuesta numérica [src]
x1 = 57.3340659280137
x2 = -11.7809724509617
x3 = -8.63937979737193
x4 = 46.3384916404494
x5 = 40.0553063332699
x6 = -68.329640215578
x7 = -25.9181393921158
x8 = 96.6039740978861
x9 = 51.0508806208341
x10 = -18.0641577581413
x11 = -80.8960108299372
x12 = -69.9004365423729
x13 = 18.0641577581413
x14 = 73.0420291959627
x15 = -65.1880475619882
x16 = 47.9092879672443
x17 = 76.1836218495525
x18 = 44.7676953136546
x19 = -62.0464549083984
x20 = 13.3517687777566
x21 = 7.06858347057703
x22 = 32.2013246992954
x23 = 62.0464549083984
x24 = -33.7721210260903
x25 = -1808.77197030432
x26 = 88.7499924639117
x27 = -63.6172512351933
x28 = -24.3473430653209
x29 = -47.9092879672443
x30 = 85.6083998103219
x31 = 10.2101761241668
x32 = 41.6261026600648
x33 = 79.3252145031423
x34 = -5.49778714378214
x35 = 24.3473430653209
x36 = 22.776546738526
x37 = -93.4623814442964
x38 = -87.1791961371168
x39 = 82.4668071567321
x40 = 98.174770424681
x41 = 38.484510006475
x42 = -43.1968989868597
x43 = -49.4800842940392
x44 = -27.4889357189107
x45 = -84.037603483527
x46 = 19.6349540849362
x47 = -91.8915851175014
x48 = -96.6039740978861
x49 = 60.4756585816035
x50 = 25.9181393921158
x51 = -90.3207887907066
x52 = -55.7632696012188
x53 = 95.0331777710912
x54 = 66.7588438887831
x55 = 91.8915851175014
x56 = -36.9137136796801
x57 = -3.92699081698724
x58 = -77.7544181763474
x59 = 63.6172512351933
x60 = 90.3207887907066
x61 = -40.0553063332699
x62 = 3.92699081698724
x63 = 29.0597320457056
x64 = -30.6305283725005
x65 = -58.9048622548086
x66 = 69.9004365423729
x67 = 35.3429173528852
x68 = 54.1924732744239
x69 = -14.9225651045515
x70 = -46.3384916404494
x71 = 84.037603483527
x72 = -74.6128255227576
x73 = 68.329640215578
x74 = -71.4712328691678
x75 = -2.35619449019234
x76 = -52.621676947629
x77 = -99.7455667514759
x78 = 0.785398163397448
x79 = -21.2057504117311
x80 = 16.4933614313464
x80 = 16.4933614313464